Image forming apparatus with a power controlled flux generator as a function of a detected temperature of an image bearing surface

Abstract

An image forming apparatus includes an image bearing member; an image forming device for forming an image on the image bearing member through steps including a step of electrically charging the image bearing member to a substantially uniform potential, wherein the image bearing member is repeatedly usable for forming images; and a heating device, disposed adjacent to the image bearing member, for locally heating the image bearing member.

1. An image forming apparatus comprising:
 an image bearing member, including a heat generation layer for generating heat at least by a magnetic flux, for bearing a toner image on a surface thereof; 
 charging means for charging said image bearing member; 
 latent image forming means for forming an electrostatic image by exposing said image bearing member after being charged; 
 developing means for developing the latent image with toner into a toner image; 
 transferring means for transferring the toner image onto a recording material; 
 magnetic flux generating means, disposed so as to be spaced from said image bearing member at a position across said image bearing member from said charging means, for generating a magnetic flux toward said image bearing member; 
 temperature detecting means disposed so as to be contacted to the surface of said image bearing member at a position opposed to said magnetic flux generating means; and 
 control means for controlling electric power supplied to said magnetic flux generating means on the basis of a result of detection of said temperature detecting means. 
 
   
   
     2. An apparatus according to  claim 1 , wherein said magnetic flux generating means is disposed vertically below said charging means. 
   
   
     3. An apparatus according to  claim 1 , further comprising a voltage source for supplying electric power to said magnetic flux generating means,
 wherein said voltage source is supported separately from said image bearing member.